\chapter{行列式和线性方程组}

\input{units/ds2-ch4-1}
\input{units/ds2-xiti-8}

\vspace{2em}
\input{units/ds2-ch4-2}
\input{units/ds2-ch4-3}
\input{units/ds2-ch4-4}
\input{units/ds2-ch4-5}
\input{units/ds2-xiti-9}

\vspace{2em}
\input{units/ds2-ch4-6}
\input{units/ds2-ch4-7}
\input{units/ds2-xiti-10}

\vspace{2em}
\input{units/ds2-ch4-8}
\input{units/ds2-xiti-11}

\vspace{2em}
\input{units/ds2-ch4-xiaojie}

\nonumsection{复习参考题四}
\input{units/ds2-ch4-fuxi-A.tex}
\input{units/ds2-ch4-fuxi-B.tex}

